[PATCH v6 0/5] Refactor to support multiple download mode

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Intention of this series to support multiple download mode and
only modify the required bits during setting tcsr register.

Other download modes are minidump, full dump, both fulldump + minidump, nodump.

Latest minidump kernel driver patches has been sent here

Also, this series should be applied on

Changes in v6:
  - Applied suggested API change(at v4) by [dmitry.baryshkov] 

Changes in v5: https://lore.kernel.org/lkml/1680017869-22421-1-git-send-email-quic_mojha@xxxxxxxxxxx/
  - Tried to fix the issue reported by kernel test robot

  - Applied some of the improvement suggested by [Bjorn.andersson]
    . Dropped 'both' instead support full,mini or mini,full for setting download
    mode to collect both minidump and full dump.
    . logging improvement.

Changes in v4: https://lore.kernel.org/lkml/1679935281-18445-1-git-send-email-quic_mojha@xxxxxxxxxxx/
  - val should be shifted within the function [srinivas.kandagatla]
    i.e new = (old & ~mask) | (val << ffs(mask) - 1);
  - Added Acked-by [linus.walleij] on pinctrl change.

Changes in v3 : https://lore.kernel.org/lkml/1679070482-8391-1-git-send-email-quic_mojha@xxxxxxxxxxx/
 - Removed [1] from the series and sent as a separate patch[2], although this series
   should be applied on top [2].
  [1] https://lore.kernel.org/lkml/1677664555-30191-2-git-send-email-quic_mojha@xxxxxxxxxxx/
  [2] https://lore.kernel.org/lkml/1678979666-551-1-git-send-email-quic_mojha@xxxxxxxxxxx/
 - Introduce new exported symbol on suggestion from [srinivas.kandagatla]
 - Use the symbol from drivers/pinctrl/qcom/pinctrl-msm.c.
 - Addressed comment given by [dmitry.baryshkov]
 - Converted non-standard Originally-by to Signed-off-by.

Changes in v2: https://lore.kernel.org/lkml/1677664555-30191-1-git-send-email-quic_mojha@xxxxxxxxxxx/
 - Addressed comment made by [bjorn]
 - Added download mask.
 - Passed download mode as parameter
 - Accept human accepatable download mode string.
 - enable = !!dload_mode
 - Shifted module param callback to somewhere down in
   the file so that it no longer need to know the
   prototype of qcom_scm_set_download_mode()
 - updated commit text.

Mukesh Ojha (5):
  firmware: qcom_scm: provide a read-modify-write function
  pinctrl: qcom: Use qcom_scm_io_update_field()
  firmware: scm: Modify only the download bits in TCSR register
  firmware: qcom_scm: Refactor code to support multiple download mode
  firmware: qcom_scm: Add multiple download mode support

 drivers/firmware/Kconfig               | 11 -----
 drivers/firmware/qcom_scm.c            | 88 ++++++++++++++++++++++++++++++----
 drivers/pinctrl/qcom/pinctrl-msm.c     | 11 ++---
 include/linux/firmware/qcom/qcom_scm.h |  2 +
 4 files changed, 86 insertions(+), 26 deletions(-)


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